Features:  It has a 500m working distance and 360°rotatable function with the clear, bright and stable lines.  Red laser line for marking, suitable for frame-structure, shelves and etc..  Line up your entire work area from floor to ceiling.  Laser kits provide a positioning system to make your work efficient and accurate.  When the instrument is set upright, it will emit laser-beam to form a horizontal scanning surface and a plumb line automatically.  When set horizontally, it will form a plumb scanning surface and a vertical line.  With 5 degree self levelling-range and 500m diameter measurement-range.  Controlled by temperature-stable sensors for auto alignment.  Two working modes design, you can adjust manual mode or automatic mode according to your demands.  Spinning direction adjustable, left spinning will makes the laser module step-move counter-clockwise, and the right spinning will makes the laser module step-move clockwise.  Speed adjustable, the speed of scanning includes 5-knots: 0-60-120-300-600-0 r.p.m.  Angle adjustable, the angle of scanning includes 5 levels: 0-10°-45°-90°-180°.  And also support to adjust the slope of X/Y-axis while under manual mode.  All functions can be used with remote controller.  Included a pair of laser goggles, easily view the laser among the strong sunlight.  Comes with one firm black carry box with tenacious buffer material inside.  It can be widely used in architecture construction, equipment installation, indoor decoration and so on.    Specifications:  Name: Levelling Machine  Material: ABS+metal  Battery:  Host battery: 1 * 6V, 3500mAh battery (included)  Receiver battery: 2 * LR03 battery, 1.5V, 100mAh (included)  Remote controller battery: 1 * 6F22 battery, 8.4V, 300mAh (included)  Water-proof: IP54  Leveling accuracy: horizontal: ±20″; vertical: ±20″  Leveling range: ±5°  Measuring diameter: 500m  Spinning speed: 0、60、120、300、600 r.p.m  Directional-scanning angle: 0°、10°、45°、90°、180°  Slope-adjusting-range: ±5°(Bi-directional)  Light source: laser diode, wavelength: 635nm  Down point diode: accuracy: ±1mm/1.5m  Remote controlling distance: approximately 20m  Working temperature: -10℃ to 45℃ / 14℉ to 113℉  Item size:  Host size: 365 * 240 * 290mm / 14.37 * 9.45 * 11.42in  Receiver and handle size: 153 * 200 * 65mm / 6.02 * 7.87 * 2.56in  Remote controller size: 112 * 47 * 25mm / 4.41 * 1.85 * 0.98in  Glasses size: 150 * 57 * 62mm / 5.91 * 2.24 * 2.44in  Item weight: 4527g / 9.98lb  Package size: 363 * 230 * 263mm / 14.29 * 9.06 * 10.35in  Package weight: 4765g / 10.51lb    Packing List:  1 * Rotary Laser Machine  1 * Carrying Box  1 * Glasses  1 * Laser Target  1 * Receiver and Handle  1 * Remote Controller  1 * Power Adapter (EU/US Optional)  2 * Keys  1 * Carrying-strap  1 * User Manual